Fuel injection nozzle for internal combustion engines

US4171099A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Odon Kopse · Stuttgart, DE
• Richard Kinzel · Stuttgart, DE
• Ewald Eblen · Stuttgart, DE
• Willi Voit · Stuttgart, DE
• Gregor Schuster · Baden, AT
• Franz Eheim

Key dates

• Filing date: Dec 16, 1976
• Grant date: Oct 16, 1979
• Expiry date: Dec 16, 1996

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M63/0003
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Improvements in a fuel injection nozzle for internal combustion engines having a needle valve positioned in a chamber constrained by a closure spring positioned in another chamber thereabove, there also being provided an intermediate piston which includes a portion that extends into the spring chamber therebeneath and further includes a working surface area that is subjected to pressures in still another chamber positioned thereabove.